51225360 has 80 divisors (see below), whose sum is σ = 161448000. Its totient is φ = 13432320.

The previous prime is 51225331. The next prime is 51225371. The reversal of 51225360 is 6352215.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51225360.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12891 + ... + 16389.

It is an arithmetic number, because the mean of its divisors is an integer number (2018100).

Almost surely, 2^51225360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51225360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80724000).

51225360 is an abundant number, since it is smaller than the sum of its proper divisors (110222640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51225360 is a wasteful number, since it uses less digits than its factorization.

51225360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 51225360 is about 7157.1893924920. The cubic root of 51225360 is about 371.3884042222.

Adding to 51225360 its reverse (6352215), we get a palindrome (57577575).

The spelling of 51225360 in words is "fifty-one million, two hundred twenty-five thousand, three hundred sixty".